Date:         Fri, 3 Feb 95 9:33:24 PST
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         Dave Kautz <dkautz@hpsidms1.sid.hp.com>
Subject:      Re: My fool injection

> 
> 
> I have had several people tell me that I should leave the FI on the 
> bus.  But last Summer when this problem arose, I got the FI motor and 
> put it in, I spend weeks trying to get it to work correctly.  No one 
> knew what the problem was. I just want a bus that runs good.  I would 
> rather have the FI if I can get it working.  
> 
>     Last summer no one on the list knew a fix.  Well now that the 
> list has grown mabey someone with the fix has arrived.
> 
>     The probelm is that when the ignition is on the injectors open 
> and stay open.  no pulsing.  The injectors are not grounding where 
> they shouldn't.  Checked that.  I am getting a good siginal from the 
> coil.  Wires are hooked up correctly.  Checked several times.  Air 
> flow meter was tested and is OK.  Double relay is also OK. Grounds 
> are good, connected as in the manual.  I even replaced the Brain box. 
> No effect.  Cylinder head thermo is OK as is the air temp sensor.  I 
> don't know what else it could be.
> 
>     I would like to fix it, but I just want my bus back and running.  
> If I can get it working I will have to put carbs on, or mabey an 
> after market FI system, I have had better luck trouble shooting them.
> 
>     Any solutions, fixes, or suggestions are greatly appreciated.
>     
>     Busless
>     
>     Brent
>     
>     
> 
  Looking at Bentley and those awful "current flow diagrams" indicates that
  with the ignition on but the engine off the fuel pump should be off too. I'm
  guessing here, but if the engine is not turning I wouldn't expect any
  pulsing since the frequency signal is coming from the distributor. The signal
  voltage to the double relay comes from the flow sensor open or from the   
  igntion switch _only_ when it is in the "start" position.

  You might try opening and closing the points manually to see you can get
  the injectors to pulse. Otherwise look for a short that is running 12 volts
  through the injectors, by passing the ECU.

  Good Luck,

  Dave Kautz